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Spatial Extent of Data

Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Population Density from U.S. Block-Level Population Density Rasters for 2010

This tabular data set represents population density, persons per square kilometer from 2010 Census block level data, processed by James Falcone (USGS, 2016), compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. This dataset can be linked to the NHDPlus version 2 data suite by the unique identifier COMID. The source data for population density was produced by the U.S. Geological Survey (Falcone, 2016). Units are persons per square kilometer. Reach catchment information characterizes data at the local scale. Reach catchments accumulated upstream through the river network characterizes cumulative upstream conditions. Network-accumulated values are computed using two methods, 1) divergence-routed and 2) total cumulative drainage area. Both approaches use a modified routing database to navigate the NHDPlus reach network to aggregate (accumulate) the metrics derived from the reach catchment scale. (Schwarz and Wieczorek, 2018).

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Author(s) Gregory E Schwarz orcid, Shannon E. Jackson orcid, Michael E Wieczorek
Publication Date 2023-08-02
Beginning Date of Data 2010
Ending Date of Data 2010
Data Contact
DOI https://doi.org/10.5066/F7765D7V
Citation Schwarz, G.E., Jackson, S.E., and Wieczorek, M.E., 2023, Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Population Density from U.S. Block-Level Population Density Rasters for 2010: U.S. Geological Survey data release, https://doi.org/10.5066/F7765D7V.
Metadata Contact
Metadata Date 2023-08-02
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License http://www.usa.gov/publicdomain/label/1.0/
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Harvest Source: ScienceBase
Harvest Date: 2025-01-23T14:13:21.299Z